wheat grass... any science to this fad?

Good list, but you forgot sunflower oil.
Recent research suggests it is as good or better than olive oil for reducing LDL blood cholersterol. One of our current research projects concerns sunflower insects so I'm kind on into publicizing its benefits. Its the best substitute currently for hydrogenated fats in processed food and it needs half as much irrigation water as corn so its a good option for farmers in dry areas.

Actually, there are three basic types, and none of them undergo much refinement beyond the expressing process. The newly developed 'Nusun' types are actually those with the qualities that enable them to be substituted for trans-fats in processed foods and restaurant deep-fryers. You can find quite a list of the health benefits here. It is disappointing that pure sunflower oil is so hard to find in grocery stores for direct sale to the consumer. I suspect this is because here is just such an overwhelming demand for it commercially right now.